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* ARM: arm_set_cpsr() handles T and J bitsDavid Brownell2009-11-221-6/+0
| | | | | | | | | | | | | | Have arm_set_cpsr() handle the two core state flags, updating the CPU state. This eliminates code in various debug_entry() paths, and marginally improves handling of the J bit. Catch and comment a few holes in the handling of the J bit on ARM926ejs cores ... it's unlikely our users will care about Jazelle mode, but we can at least warn of Impending Doom. If anyone does use it, these breadcrumbs may help them to find the right path through the code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: define two register utilitiesDavid Brownell2009-11-221-4/+1
| | | | | | | | | | | | | | Define arm_reg_current() ... returning handle to a given register, and encapsulating the current mode's register shadowing. It's got one current use, for reporting the current register set to GDB. This will let later patches clean up much ARMV4_5_CORE_REG_MODE() nastiness, saving a bit of code. Define and use arm_set_cpsr() ... initially it updates the cached CPSR and sets up state used by arm_reg_current(), plus any SPSR handle. (Later: can also set up for T and J bits.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: simplify CPSR handlingDavid Brownell2009-11-221-10/+16
| | | | | | | | | | | | | | Stash a pointer to the CPSR in the "struct arm", to help get rid of the (common) references to its index in the register cache. This removes almost all references to CPSR offsets outside of the toplevel ARM code ... except a pair related to the current ARM11 "simulator" logic (which should be removable soonish). This is a net minor code shrink of a few hundred bytes of object code, and also makes the code more readable. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: pass 'struct reg *' to register r/w routinesDavid Brownell2009-11-201-5/+6
| | | | | | | | | | | | | | | | Implementations need to access the register struct they modify; make it easier and less error-prone to identify the instance. (This removes over 10% of the ARMV4_5_CORE_REG_MODE nastiness...) Plus some minor fixes noted when making these updates: ARM7/ARM9 accessor methods should be static; don't leave CPSR wrongly marked "dirty"; note significant XScale omissions in register handling; and have armv4_5_build_reg_cache() record its result. Rename "struct armv4_5_core_reg" as "struct arm_reg"; it's used for more than those older architecture generations. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target: create/use register_cache_invalidate()David Brownell2009-11-191-4/+3
| | | | | | | | | | | | | | | Create a generic register_cache_invalidate(), and use it to replace three all-but-identical core-specific routines: - armv4_5_invalidate_core_regs() - armv7m_invalidate_core_regs - mips32_invalidate_core_regs() too. Make cache->num_regs be unsigned, avoiding various errors. Net code shrink and simplification. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* use COMMAND_PARSE_ENABLE macro where appropriateZachary T Welch2009-11-181-38/+23
| | | | | | | | Updates all command parsing of simple "enable" and "disable" arguments. A few case in the tree use a tri-state or extended arguments, which cannot use this simple macro. Simlifies the xscale icache/dcache command handler logic.
* ARM: add is_arm_mode()David Brownell2009-11-171-4/+1
| | | | | | | | | | | | | | | | | | Add a new is_arm_mode() predicate, and use it to replace almost all calls to current armv4_5_mode_to_number(). Eventually those internal mode numbers should vanish... along with their siblings in the armv7a.c file. Remove a handful of superfluous checks ... e.g. the mode number was just initialized, or (debug entry methods) already validated. Move one of the macros using internal mode numbers into the only file which uses that macro. Make the tables manipulated with those numbers be read-only and, where possible, static so they're not confused with part of the generic ARM interface. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: add arm_mode_name()David Brownell2009-11-171-2/+3
| | | | | | | | | | | | | | | Add and use arm_mode_name() to map from PSR bits to user meaningful names. It uses a new table which, later, can be used to hold other mode-coupled data. Add definitions for the "Secure Monitor" mode, as seen on some ARM11 cores (like ARM1176) and on Cortex-A8. The previous mode name scheme didn't understand that mode. Remove the old mechanism ... there were two copies, caused by Cortex-A8 needing to add "Secure Monitor" mode support. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* command_handler: change 'cmd_ctx' to CMD_CTXZachary T Welch2009-11-171-46/+46
| | | | Convert all command handler 'cmd_ctx' parameter usage with CMD_CTX.
* command_handler: change 'args' to CMD_ARGVZachary T Welch2009-11-171-25/+25
| | | | | This patch converts all instances of 'args' in COMMAND_HANDLER routines to use CMD_ARGV macro.
* command_handler: change to 'argc' to CMD_ARGCZachary T Welch2009-11-171-19/+19
| | | | | This patch converts all instances of 'argc' in COMMAND_HANDLER routines to use CMD_ARGC.
* target: simplify register get/set opsDavid Brownell2009-11-171-7/+6
| | | | | | | | | | | No need to indirect from registered integers to pointers. Just stash the pointers directly in the register struct, and don't even bother registering. This is a small code shrink, speeds register access just a smidgeon, and gets rid of another rude exit() path. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target: remove some more duplicate includesDavid Brownell2009-11-171-1/+1
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* XScale: fewere exit() callsDavid Brownell2009-11-161-4/+4
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* fileio: improve API typesZachary T Welch2009-11-161-1/+1
| | | | | | | | | | | | | Use size_t instead of uint32_t when specifying file sizes. Update all consumers up through the layers to use size_t when required. These changes should be safe, but the higher-levels will need to be updated further to receive the intended benefits (i.e. large file support). Add error checking for fileio_read and file_write. Previously, all errors were being silently ignored, so this change might cause some problems for some people in some cases. However, it gives us the chance to handle any errors that do occur at higher-levels, rather than burying our heads in the sand.
* target: no implicit #includes of "register.h"David Brownell2009-11-161-0/+1
| | | | | | | | | | | | Same deal: "register.h" got needlessly included all over the place because of being in a few widely included headers. So take it out of the header files which included it, and put it in files which use it ... reduce needless interdependencies. Also, don't need that extra "types.h" inclusion. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target: don't implicitly include "breakpoint.h"David Brownell2009-11-161-0/+1
| | | | | | | | | | | Most files in the tree seem to have ended up including this, and *quite* needlessly ... only code implementing or using breakpoints actually needs these declarations. So take it out of the header files which included it, and put it in files which use it ... reduce needless interdependencies. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: memory utils aren't ARM7/ARM9 dependentDavid Brownell2009-11-151-2/+3
| | | | | | | | | | | | | | | | The arm7_9_checksum_memory() and arm7_9_blank_check_memory() routines are not actually specific to the ARM7 and ARM9 core generations ... they can work for any core which can run algorithms using basic ARM (not Thumb) instructions. Rename them; move the declarations to a more generic site; likewise move the code (and tidy it a bit in the process). NOTE: the blank_check() method falsely returned a success status (0) on one error path, when the algorithm failed. Fixed this bug. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target: remove unused "bitfield" infrastructureDavid Brownell2009-11-131-2/+0
| | | | | | | | | | | | | | We have too many different registers, and too many version and context dependent interpretations, for this type of bitfield management to be scalable. (Anyone who really wants bitfield interpretation *can* do that in Tcl code...) There are ... quite a few copies of the same ARM dummy registers. There should eventually be one copy; this many is craziness. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* command_t -> struct commandZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and redundant suffix from struct command.
* command_context_t -> struct command_contextZachary T Welch2009-11-131-4/+4
| | | | Remove misleading typedef and redundant suffix from struct command_context.
* target_t -> struct targetZachary T Welch2009-11-131-72/+72
| | | | Remove misleading typedef and redundant suffix from struct target.
* reg_t -> struct regZachary T Welch2009-11-131-12/+12
| | | | Remove misleading typedef and redundant suffix from struct reg.
* target_type_t -> struct target_typeZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and redundant suffix from struct target_type.
* image_t -> struct imageZachary T Welch2009-11-131-1/+1
| | | | | | | Remove misleading typedef and redundant suffix from struct image. Also removes the typedef from enum image_type, as it is used in image.h only.
* armv4_5_common_t -> struct armZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and just use struct arm.
* breakpoint_t -> struct breakpointZachary T Welch2009-11-131-11/+11
| | | | Remove misleading typedef and redundant suffix from struct breakpoint.
* xscale_trace_entry_t -> struct xscale_trace_entryZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and redundant suffix from struct xscale_trace_entry.
* arm_instruction_t -> struct arm_instructionZachary T Welch2009-11-131-3/+3
| | | | Remove misleading typedef and redundant suffix from struct arm_instruction.
* xscale_reg_t -> struct xscale_regZachary T Welch2009-11-131-6/+6
| | | | Remove misleading typedef and redundant suffix from struct xscale_reg.
* xscale_common_t -> struct xscale_commonZachary T Welch2009-11-131-52/+52
| | | | Remove misleading typedef and redundant suffix from struct xscale_common.
* xscale_trace_data_t -> struct xscale_trace_dataZachary T Welch2009-11-131-6/+6
| | | | Remove misleading typedef and redundant suffix from struct xscale_trace_data.
* reg_cache_t -> struct reg_cacheZachary T Welch2009-11-131-2/+2
| | | | Remove misleading typedef and redundant suffix from struct reg_cache.
* watchpoint_t -> struct watchpointZachary T Welch2009-11-131-6/+6
| | | | Remove misleading typedef and redundant suffix from struct watchpoint.
* scan_field_t -> struct scan_fieldZachary T Welch2009-11-131-8/+8
| | | | Remove useless structure typedef.
* jtag_tap_t -> struct jtag_tapZachary T Welch2009-11-131-2/+2
| | | | | Search and destroy the jtag_tap_t typedef. This also cleans up a layering violation, removing the declaration from types.h.
* fileio_t -> struct fileioZachary T Welch2009-11-131-1/+1
| | | | Remove useless structure typedef.
* add CMD_NAME macro for command handlersZachary T Welch2009-11-131-7/+7
| | | | | By introducing the CMD_NAME macro, this parameter may be integrated as args[-1] in command.[ch], without touching any other call sites.
* use COMMAND_HANDLER macro to define all commandsZachary T Welch2009-11-131-30/+12
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* XScale uses the new inheritance/nesting schemeDavid Brownell2009-11-051-187/+118
| | | | | | | Use target_to_xscale(), replacing needless pointer traversals and simplifying a bunch of code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* Improve xscale command argument parsing.Zachary T Welch2009-11-051-2/+2
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* Improve xscale command argument parsing.Zachary T Welch2009-11-051-12/+12
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* target: remove unused interface fn that clutters codeØyvind Harboe2009-11-051-7/+0
| | | | | | | | | The quit entry point was not being invoked. Just a source of confusion at this point. XScale ran 100x reset upon quit, but that code made no sense, wasn't commented and never invoke. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* xscale: always reload handler after resetDavid Brownell2009-10-251-17/+11
| | | | | | | | | | | | | | | | | | | | Remove needless debug handler state. - "handler_installed" became wrong as soon as the second TRST+SRST reset was issued ... so the handler was never reloaded after the reset removed it from the mini-icache. This fixes the bug where subsequent resets fail on PXA255 (if the first one even worked, which is uncommon). Other XScale chips would have problems too; PXA270 seems to have, IXP425 maybe not. - "handler_running" was never tested; it's pointless. Plus a related bugfix: invalidate OpenOCD's ARM register cache on reset. It was no more valid than the XScale's mini-icache. (Though ... such invalidations might be better done in "SRST asserted" callbacks.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale: better fix for debug_handler.binDavid Brownell2009-10-161-2/+13
| | | | | | | | | | | | | Generate a C struct with the data, and use that, instead of an assembly language file. The assembly language causes issues on Darwin and MS-Windows, which don't necessarily use GNU AS; or if they do, don't necessarily use its ELF syntax. It's also better in two other ways: fewer global symbols; and the init-time size check gets optimized away at compile time. (Unless it fails, in which case bigger chunks of the file vanish.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale: stackframe corruption bugfixDavid Brownell2009-10-131-36/+18
| | | | | | | | | | | Resolve a "FIX" comment; yes that was superfluous given that the JTAG core does that check by default. It was also buggy since it wrote to a stack frame that went away before the write happened!! Other fixes: remove pointless malloc(); zero-init scan_field_t values wherever they appear; whitespace scrub; spelling fix. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* simplify XScale debug handler installationDavid Brownell2009-10-121-41/+38
| | | | | | | | | | | | | | | | | | | Load the XScale debug handler from the read-only data section instead of from a separate file that can get lost or garbaged. This eliminates installation and versioning issues, and also speeds up reset handling a bit. Plus some minor bits of cleanup related to loading that handler: comments about just what this handler does, and check fault codes while writing it into the mini-icache. The only behavioral changes should be cleaner failure modes after errors during handler loading, and being a bit faster. NOTE: presumes GNU assembly syntax, with ".incbin"; and ELF, because of the syntax of the ".size" directive. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* more xscale cleanup (mostly removing JTAG hooks)David Brownell2009-10-121-71/+58
| | | | | | | | | | | | | | | | Streamline/shrink some needless JTAG stuff: - Use #defines for the JTAG instructions; they can't ever change - Remove an unused (!) shadow of tap->ir_length - Stop using a copy of target->tap - Don't bother saving the variant after sanity checking ir_length Also, make target_create() work as on other targets: build the register cache later, making init_target() no longer be a NOP. Handle malloc failure; remove a comment that was obsoleted by the not-so-new target syntax. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale_load_ic cleanupDavid Brownell2009-10-111-16/+16
| | | | | | | | Remove unused and deprecated (in the arch spec) mode for loading code into the *main* icache (vs the "mini" icache). Disable some extremely noisy (and rarely useful) low-level debug messages Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale.c cleanupDavid Brownell2009-10-111-186/+197
| | | | | | | | | Declare almost everything as static. Move stuff to remove most forward references. Remove most forward declarations. Warn if the unimplemented register functions get called. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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